Portion of a drill bit



FIG. 1 is a rear perspective view of a portion of a drill bit showing our new design.

FIG. 2 is a right side elevational view thereof.

FIG. 3 is a top elevation view thereof

FIG. 4 is a left side elevational view thereof.

FIG. 5 is a bottom elevational view thereof.

FIG. 6 is a rear view thereof; and,

FIG. 7 is a front view thereof.

The break line used to delineate the claimed design and the broken line showing of a portion of the body and the front of the drill bit are for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a drill bit, as shown and described. 